Surface Characterization of Electrodeposited Lithium Anode with Enhanced Cycleability Obtained by  CO 2 Addition

Osaka, Tetsuya; Momma, Toshiyuki; Matsumoto, Yasuhiro; Uchida, Yuji

doi:10.1149/1.1837665

Cited by 97 publications

(44 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The capacity for the dendrite short-circuit is as low as 0.2 mAh at 15°C (2016) and 0.1 mAh at 35°C. There has been several approaches to suppress lithium dendrite formation, such as improving the mechanical properties of the SEI by adjusting the electrolyte composition, [38][39][40] exploiting a self-healing electrostatic mechanism, 16 and using a solvent with a high content of lithium salt. [17][18][19] The structural rigidity of a SEI layer modified with additives cannot be sustained during extended deposition and stripping.…”

Section: Lithium Dendrite Formation From Liquid Electrolytesmentioning

confidence: 99%

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

2016

View full text Add to dashboard Cite

Lithium metal is the most attractive anode material for batteries because of its high specific capacity (3861 mAh g −1 ) and low negative potential (−3.04 V vs. NHE). However, lithium dendrite growth during lithium deposition leads to serious safety problems and poor cycling performance. The conventional liquid electrolyte used in lithium-ion batteries results in significant lithium dendrite formation at room temperature and a high current density. Thus, there has been much research effort to achieve the suppression of lithium dendrite formation. Recently, a new class of non-aqueous liquid electrolyte with a high concentration of lithium salts, such as solvated ionic liquid and solvent-in-salt electrolytes, has been reported to suppress lithium dendrite formation. Solid polymer electrolytes have been known to suppress lithium dendrite formation; however, the low lithium ion conductivity and high interface resistance between lithium and the polymer electrolyte at room temperature limits their use for conventional batteries. The interface resistance was significantly decreased by the addition of an ionic liquid into a polymer electrolyte and lithium dendrite formation was suppressed. A theoretical analysis predicted that if a homogenous solid electrolyte with a shear modulus of 6 GPa was obtained, then the lithium dendrite problem would be solved. However, some lithium conducting solid electrolytes such as Li 7 La 3 Zr 2 O 12 still exhibit lithium dendrite formation. In this review, we introduce the recent status of lithium dendrite formation on lithium metal in contact with liquid, solid polymer, and solid electrolytes.

show abstract

Section: Lithium Dendrite Formation From Liquid Electrolytesmentioning

confidence: 99%

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

2016

View full text Add to dashboard Cite

show abstract

“…Osake et al [40] tried to inject some small molecules (CO 2 , SO 2 ) into organic electrolyte and noticed that all of them can accelerate the formation of passive film. Besides CO 2 [43] are also considered as additives.…”

Section: Inorganic Compoundsmentioning

confidence: 99%

Challenges in the Development of Film-Forming Additives for Lithium Ion Battery: A Review

Zhang¹,

Zhang²,

Xia³

et al. 2013

AJAC

View full text Add to dashboard Cite

Electrolytes additives are ubiquitous and indispensable in all electrochemical devices. In this sense, the principle and the classification of film-forming additives for lithium ion secondary batteries are described. The film formation mechanism and research progress of the pyrazole derivatives, organic halogenide, esters and derivatives, boron compounds and inorganic compounds are introduced. Emphasis is focused on the principles and film-forming mechanisms of each additive. The development of film-forming additives is forecasted and prospected.

show abstract

“…2b and c. An ac impedance measurement confirmed that the interface resistance was decreased from 18 to 6 Ω cm 2 upon addition of CO 2 , the effect being similar to that found in the PC liquid system. 13,14 From these results, we conclude that there are possibilities of enhancing the properties of the lithium anode by properly selecting and designing the combination of host polymer, supporting electrolyte, solvent, and additives. The combination of PVdF-HFP gel system with CO 2 saturation is one of the candidates for making the lithium metal anode usable in rechargeable batteries.…”

mentioning

confidence: 91%

Performance of a Lithium Metal Anode in Poly(vinylidene fluoride)-Type Gel Electrolyte

Osaka

Komaba

Uchida

et al. 1999

Electrochem. Solid-State Lett.

Self Cite

View full text Add to dashboard Cite

The performance of a lithium metal anode was studied in a poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) gel electrolyte. By using the PVdF-HFP gel electrolyte, we obtained a higher coulombic efficiency (ca. 85%) and a more uniform morphology of the lithium metal anode than those obtained with the propylene carbonate liquid or the poly(ethylene oxide) gel system. Additionally, the CO 2 addition to the PVdF-HFP gel system improved both the the uniformity in morphology of the lithium anode and the coulombic efficiency further to ca. 95%.The gel electrolyte, which consists of polymer matrix, organic solvent, and supporting electrolyte, was introduced as a novel material in the field of rechargeable battery applications as early as 1975. 1-3 Two advantages of the gel electrolyte applied to batteries include the fact that the electrolyte solution does not leak out from the cell, and that the electrolyte can be prepared as a thin film, which allows construction of a solid-state and high energy density battery. In particular, the gel electrolyte demonstrates a high ionic conductivity of about 10 -3 S cm -1 at room temperature and has a sufficient mechanical strength. Examples of the host polymer of the gel electrolyte are poly(acrylonitrile), 4,5 poly(methylmethacrylate), 3,4 and a new copolymer of vinylidene fluoride with hexafluoropropylene (PVdF-HFP). 6-9 The first reliable and practical rechargeable Li-ion plastic battery, which contained the carbon material as the anode, was developed in 1996 using the PVdF-HFP copolymer-type gel electrolyte. 10 For the next generation of rechargeable batteries, the lithium secondary battery using lithium metal as the anode is the most attractive candidate for higher energy power sources for portable electronic devices, electric vehicles, and load-leveling systems. Lithium metal demonstrates a remarkably low electrochemical equivalent and the most negative redox potential of all the metallic elements. There are, however, some disadvantages of the lithium metal anode compared to the carbon anode. The charge-discharge cycle life of the lithium metal anode is degraded by the formation of dendritic deposits, which causes the isolation of active lithium metal and also leads to short circuit with the cathode. Another reason for the poor cycle life of the lithium anode may be the formation of an interfacial layer between lithium metal and electrolyte with a low ionic or electronic conductivity as discussed in Ref. 9 and 10.In order to improve the lithium anode properties, the effect of additives to the liquid electrolyte was studied, e.g., CO 2 11-15 and HF. 16,17 Recently, we confirmed that a poly(ethylene oxide) (PEO) -based gel electrolyte effectively suppressed the dendritic deposition of lithium. 18 In the present study, the excellent charge-discharge performance of the lithium metal anode obtained with the PVdF-HFP gel electrolyte system is demonstrated. Furthermore, the effect of CO 2 addition to the PVdF-HFP gel electrolyte was investigated.Experimental The details of th...

show abstract

Surface Characterization of Electrodeposited Lithium Anode with Enhanced Cycleability Obtained by CO 2 Addition

Cited by 97 publications

References 1 publication

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

Challenges in the Development of Film-Forming Additives for Lithium Ion Battery: A Review

Performance of a Lithium Metal Anode in Poly(vinylidene fluoride)-Type Gel Electrolyte

Contact Info

Product

Resources

About